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Quartus II Settings File Reference Manual - Altera

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6–220 Chapter 6: Fitter Assignments<br />

OPTIMIZE_SSN<br />

OPTIMIZE_SSN<br />

Type<br />

Controls the Simultaneous Switching Noise (SSN) optimization setting of the Fitter.<br />

This option determines how aggressively the Fitter optimizes the design for SSN. If<br />

this option is set to Off, the Fitter does not perform any SSN optimizations. If this<br />

option is set to Normal compilation, the Fitter performs SSN optimizations which<br />

should not impact design performance. When this option is set to Extra effort, the<br />

Fitter performs aggressive SSN optimizations which may affect design performance.<br />

Enumeration<br />

■ Extra effort<br />

■ Normal compilation<br />

■ Off<br />

Device Support<br />

This setting can be used in projects targeting the following device families:<br />

■ Arria <strong>II</strong> GX<br />

■ Arria <strong>II</strong> GZ<br />

■ Arria V<br />

■ Cyclone <strong>II</strong>I<br />

■ Cyclone <strong>II</strong>I LS<br />

■ Cyclone IV E<br />

■ Cyclone IV GX<br />

■ Cyclone V<br />

■ HardCopy <strong>II</strong>I<br />

■ HardCopy IV<br />

■ Stratix <strong>II</strong>I<br />

■ Stratix IV<br />

■ Stratix V<br />

Notes<br />

This assignment is included in the Fitter report.<br />

Syntax<br />

set_global_assignment -name OPTIMIZE_SSN <br />

Default Value<br />

Off<br />

<strong>Quartus</strong> <strong>Settings</strong> <strong>File</strong> June 2012 <strong>Altera</strong> Corporation<br />

<strong>Reference</strong> <strong>Manual</strong>

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